Fuel debates, absolute nightmare, everyone always has an opinion but rarely any facts to back it up.

Would be interesting if one of the "respected tuners" on here would do a back to back test to see how it compares, set a point like for example 5000rpm@25psi on a given engine and see how much timing each fuel can take at an AFR of 12 flat, or something like that before det, so that we get a conclusive result.

Until then, its all just gossip really IMHO.

Best advice is get your car mapped on a fuel that is always available in your area easily, and then stick to that all the time.